Grinding apparatus



May 25,1926. 1,585,982

' L. R. HEIM GRINDING APPARATUS Filed Jan. 8. 1923 2 sheets-Sheet 2 AVAILABLE GOPY LEWIS'R. IIEIII, on DANBURY, CONNECTICUT, AssIGNoiaTo'Tnn 1min GRINDER Coimrun, or DANBUBY, CONNECTICUT, A CORPORATION'OF cO ll'NEcTIGU'lr GRINDING APPARATUS.

v I Application flied January 8,1923. Serial Re. I i Y I v This invention relates to grinding, and more particularly to apparatus for grinding Cylindrical articles or bodies having a hgaded or enlarged portion at one end there- 0 One of the objects of this invention is toprovide simple apparatus of practical construction and eflicient action for grinding articles or bodies. of irregular shape, a portion of each of which is substantially cylindrical and another portion of each being of greater radial extent, than the cylindrical portion. Another object is to provide apparatus of the above. character that will be of simple and convenient yet dependable manual manipulation and conducive to high speed offoperation; Another object is to provide a simple andv practical apparatus forflinsuring a reliable and dependable action of the grinding apparatus throughout theportions, of the" article desired to be vground and. f for" safeguarding both the grinding apparatusand the article operated upon from lnjurjy that might otherwise result because; of the irregular shape' of the.

article operated upon. -'l his invention aims also toprovide a simple and practical device forrapidly and effectively discharging the work acted upon i from the apparatus afteroperation thereon Otherobjects will be in part obvious or in part pointed out hereinafterr a I The invention accordinglyconsists in the features of construction, combinations of elements and arrangementsof parts as Will be exemplified in'the structure to behereinafterv set forth, and the, scopeof the applicavtionvo f which willgbe indicated in the following claims;

,In th accompanying drawings in which .isshown one o-f variouspossible embodiments of the mechanical features offthisin e iw- 1 J Figure 1 is a 'si'de'ielevation, partly in section and withpertain, parts omitted to Show the construction-more clearly;

Figure 2 .is a frontlelevation as viewed substantially on the v of Fig; 1 and operative ortions whic'li iicoact withp fact wall 12? of 1th 11 the rib 12 of construction e 9 PP 14 in genera o Figure 3 is an enlarged detached view in section .of certainufeatures shown in Fig. '2.

Similar reference characters referto similar parts throughoutthe several views ofthe drawings. t Referring now to the drawings and more particularly to Fig. ,2, there is shown a 56 grinding'wheel 10, rotatable in' anysuitable manner at a suitable grinding speed and, in 4 the direction of the arrow indicatedwin' th is figure, and a regulating wheel 11 rotatable at a relatively low speed for "purposes more clearly hereinafter described. f 'lfheliwheels a 10 and 11 ma'yl be composed, preferably of an? suitable abrasive materialand are suitab y mounted formation in vthe dire'ctio'n d e y e mom so Caste pr sen er erative surfaces} 109%.a1id "112,1 respet fi' "el' which not only'traveliin opposite direc ens with respect to theuworkipperatjed'u pon but also pp' wha a h ot erlt iib e n o d upon the worlg, jopjeratedupon; he'wh jeels n 'rQ 'r', amipr i a 1 ranged or mounted 1 that 'they" may accommodate the opposed tions thereof to different be secured to the chine as by bolt 13'; portionsubs' 'it liy two wheel's'fwith a bridging settle between th e b g'p'o Upon the horizon plane-faced on its under side to rest upon the surface 12 and provided at its forward end (or left-hand end as viewed in Fig. 1) with a downwardly extending lug or plate 15 preferably integrally formed therewith. The plate 15 is provided with a horizontally extending slot 16 through which extends the cap screw '17 for securing the casing 14 in position upon the supporting or bridging member 12. The slot 16, moreover, permits the casing 14 and its associated parts to be adjusted horizontally toward or away from either of the wheels.

The casing 14 is adapted to support a work carrier 18 extending between the operative surfaces of the two wheels and, moreover, is adapted also to support and house the mechanism for moving the work support or carrier 18 inwardly or outwardly (as viewed in Fig. 2) between the approachin o erat-ive surfaces 10 and 11 of the grmdlng wheel 10 and regulating wheel 11, respectively. As to the detailed features of the latter construction, reference may be had to my above-mentioned co-pending application, but it may at this point he briefly explained that the casing 14 is bored out throughout substantially its entire extent as at 19 to provide a substantially cylindrical hearing or guiding surface, and within the casing 14 is housed for slidable movement therein a substantially cylindrical operating bar 20, at the forward end and under side of which there is integrally formed therewith a rack 21 adapted to mesh with a spur ear 22 supported upon the shaft 23 rotata ly mounted between a pair of lugs 24 inte ally formed at the forward end of the casing 14. At the right-hand end (as viewed in Fig. 2) of the shaft 23 is mounted an operating handle or lever 25 by means of which and through the gear and rack connection the operating bar 20 is moved within the housing 14.

At two spaced points in the upper surface of the bar 20, preferably one on each side of the wheels 10 and 11 (see Fig. 1), are pro vided inclined surfaces 26 and 27 with which cylindrical posts 28 and 29 vertically slidable inthe vertically extending sleeve portions 30 and 31 respectively of the casing 14 are adapted to cooperate. Thus, referring to Fig. 1, the continuous clockwise rotation of the operating lever 25 will move the operating bar 20 to the right and thus simultaneously move upwardly with a continuous movement the posts 28 and 29 and, vice versa, a reverse movement of the operating lever 25 carries, through the gear 22 and rack 21, the bar 20 to the left to permit the vertical posts 28 and 29 to return to their initial position.

The upper portions of the vertical posts 28 and 29 are provided with verticall extending lugs 28 and 29, centrally s otted as at 28 and 29", respectively. To the lugs 28 and 29 is secured the work carrier 18. Cap screws 28 and 29 threaded into the work carrier 18 and passing through the vertically extendin slots 28 and 29", respectively, permit t e work carrier 18 to be not only rigidly secured to the vertical posts 28 and 29, but also to be adjusted vertically with respect thereto. Moreover, this connection of the work carrier 18 with thevertically moving posts 28 and 29 makes possible also any desired adjustment of the work carrier 18 with respect to the horizontal plane as viewed in Fig. 1; that is, the work carrier 18 may be given whatever inclination with respect to the horizontal that conditions might require.

At this point it might be noted that suitable springs 30 and 31" suitably connected with the work carrier 18 and the casing 14 insure the positive downward movement (as viewed in Fig. 1) of the work carrier 18 with the vertically movable supporting posts 28 and 29 in response to a counter-clockwise rotation of the operating lever 25.

The work carrier 18 may conveniently take the form of a bar, generally of rectangular cross section, and aside from extending between the two wheels 10 and 11 extends also beyond the supporting posts 28 and 29 in order to dependably coact with stops 32 and 33 spaced well apart and threaded into suitable bosses in the upper portion of the casing 14. The stops 32 and 33 are positioned in the path of movement of the carrier 18 and act to limit the downward movement of the carrier 18 as viewed in Fig. 1. The stops 32 and 33 are provided at their upper ends with disc-like heads 32 and 33 carrtying on their outer periphery suitable gra uations or indicia, and these graduations extending throughout the entire periphery are preferably decimal fractions of the pitch of the threaded portions of the stops 32 and 33. Coacting with each disc member 32 and 33 are the fixed vertically extending posts 34 and 35, respectively, suitably secured to the casing 14. The posts 34 and 35- are graduated as is diagrammatically indicated at 34" and 35*, res ectively, and with these graduations atum lines 18 and 18 upon the work carrier 18 cooperate. By this means the adjustment of the two ends of the work carrier 18 with respect to the opposed operative portions of. the two wheels may not onl be equalized but also exact-1y predetermine For example, the pitch of the threaded stops 32 and 33 may be 0.1 inches, and the graduations 34 and 35" may represent intervals equal to this pitch. The disc portions 32 and 33 of the stops may be divided into one hundred equal parts and these portions, coacting with the vertical members 34 and 35, form convenient verniers by means of which the elevation of the stops 32 and 33,- and hence of the work supported on the work carrier 18, may be directly predetermined to within one-thousandth of an inch.

The cylindrical work, generally indicated at 36, is supported upon the upper surface of the work carrier 18 and with the latter in lowermost position and resting upon the stops 32 and 33 it presents the work to the opposed operative portions of the two wheels, which portions may in any suitable manner, as for example by a double-diamond truing device, have been previously brought into exact parallelism. Assuming now, for example, in order to illustrate the use of the vernier adjustment of the two stops, that work of larger diameter is to be operated upon, the wheels 10 and 11 are first adjusted away from one another to the desired extent in order that the opposed operative portions heretofore brought into parallelism may accommodate the enlarged diameter of work to be operated upon. In order, however, that the desired parallel opposed operative portions operate upon the work of larger diameter, the work carrier 18 must be lowered, and hence it will be seen that for each diameter of work operated upon there will be a predeterminably fixed elevation of the upper surface of the work carrier with respect to the opposed operative portions of the two wheels. By means of the directreading indicating adjustments or stops the desired elevation of the work carrier 18 for each diameter of the work operated upon may be exactly predetermined without the necessity of finding this elevation empiriing wheel 11 with respect to the work carrier cally. Thus both time and labor are conserved in making possible the ready and rapid desired adjustmentof the work carrier for the varying conditions under which the apparatus must work.

In order to insure the feeding of the cylindrical work along the work carrier 18 in the direction of the axis of the work, the work carrier 18 and the regulating wheel 11 are related to one another so that the path of travel provided for the work by the work carrier and the path of travel of the operative surface of the regulating wheel are inclined with respect to one another so that the regulating wheel 11 may exert a thrustin thedesired. direction of travel. Preferably I incline the axis of rotation of the regulat- 18 and, as viewed in Fig. 1, this relative inclination is clearly shown. It is to be understood, of course, that this relative inclination may be varied to vary the rate of feed, and I may conveniently accomplish this by tilting the work carrier 18 with respect to the supporting lugs 28 and 29 of the vertical posts 28 .and 29, respectively. I

At its left-hand end as viewed in Fig. 1 the work carrier 18 is preferably cut away tratively. shown as taking the form of a bolt having a cylindrical shank 36, which it is desired to reduce to cylindrical form, and the enlarged end portion or head 36" The upper face of the work carrier 18 (see Figs. 2 and 3) is inclined toward the operative surface 11 of the regulating wheel 11 and is, moreover, recessed as at 18 throughout at least the entire extent of the active supporting portion between the wheels. Within the recess 18 is inserted a wear strip 38, herein shown illustratively as of square cross section to correspond with the cross section of recess 18. Thestrip 38 is made of a suitably hardened steel and is adapted to be exposed to the cylindrical work operated upon it; The work carrier 18 is provided with a slot 18 extending inwardly from the recess 18 so as to permit the screws 39 to clamp the wear strip 38 in position. The wear strip 38, having a plurality of wear surfaces, may be rotated to expose any one of its several wear surfaces to the work and thus provides a convenient and simple means for presenting to the work a new or unworn supporting surface as conditions require. The recess 18 with the Ion associated clamping screws 39, however, also permits the wear strip 38 to be slidably moved within the recess, and referring now to Fig. 1 it will be seen that I position the wear strip 38 longitudinally of the active supporting portion of the work carrier 18 so that its left-hand end projects beyond the left-hand end portions of the operative surfaces of the two wheels. Thus, in Fig. 1 the projecting end is indicated at 38.

Upon the right-hand end portion of the bar forming the carrier 18, and upon the rear side thereof as viewed in Fig. 1, there is detachably secured, as by the cap screws 40 and 41, an auxiliary frame member 42 having two spaced bosses 42 and 42* preferably integrally formed therewith and adapted to overlap the upper side of the work carrier- 18 so as to be in substantial alignment with the ath of travel of the work 36 on the carrier .18. One of the bosses,

namely, the forward one, 4.2, is internally will be noted that the sleeve is elongated and, by means of its threaded engagementwith the boss 42 may be moved longitudinally ofitself toward or away from the wheels and substantially in the direction of the path of travel of the work. The forward end of the sleeve 42 may thus act as a stop to engage the end of the work, and may be used in conjunction with the stop 38 01' independently thereof. Ahead 42 .on the sleeve serves for convenient manual adjust-.

ment thereof, and a lock-nut 42 may be employed'to lock the sleeve in adjusted position. It should be noted that I prefer to employ both the sleeve 42 and the stop 38 to limit the inward movement of the work, as hereinafter explained, and that the'stop. 38 acts positively to prevent engagement of the enlarged portion 36 of the work with the wheels. Intermediate of the bosses 42? and 42 there is secured to the rod 43 a vertically extending arm 44 slit or bifurcated at its upper end, as at 44. A set screw 44 in the lower end of the arm 44 is adapted to lock the rod 43 to the arm 44 and engages the flattened portion 43 of the rod 44 so that the latter may be adjustably secured to the arm 44' with respect to the work 36.

A lever 45 is pivoted as by the cap screw,

46 at its lower end to the bar -18 and at its upper endv is provided with a pin conveniently taking the. form of a bolt 47 for slidable engagement with the slotted portion 44 at the upper end of the arm 44. The upper end of the lever 45 is connected by an operating rod 48 which extends to the left, as viewed in Fig. 1, to the-front part of the machine or apparatus where it is formed into a handle portion 48 for convenient manual operation. The forward end of the operating rod 48 is conveniently supported as by the plate member49 preferably detachably secured as by the thumb-screw 50 to the upper portion of the protective housing 12 encas'ing the two wheels 'and substantlally at the portion thereof intermediate ofthe two wheels.

Turning now to the preferred method of operation of this apparatus, the operating lever 25' is first moved ina clockwise direc tion to raise the carrier 18, as viewed iIiFig. 1, and to position its work-supporting surface between more distantparts of the approaching operative surfaces 10" and .11 of the two wheels 10 and 1-1 (see Fig, 2). The work 36 intended to be operated upon is thereupon placed upon the work carrier 18 r with the cylindrical portion 36 between the operative surfaces and with the enlargedend.

or headed portion 36 in engagement-with the stop or rojecting'end 3880f the wear strip 38 and with its right-hand end. (as viewed in Fig. 1) abutting against the sleeve 42. This position of the work i s'indicated in full lines in Fig. 1. The inclined supsuring this action to take place.

moving operative surface 11 of they regu-.

lat-ing wheel 11. This wheel, and hence its operative surface, moves at a relatively lowspeed, and while the carrier 18 is in its uppermost position, as we'll-as during the inward and'outward movements thereof, the

work-is thus kept out of contact with the surface 1050f the grinding wheel 10 moving at a suitable grinding speed. Undesired grinding and a. consequent marring of the cylindrical portion 36 'of the work is 'thus during this short period prevented.

The work 36 having been thus positioned on the work carrier 18, the operating lever 25 is moved in counter-clockwise direction with a continuous movement, thus permitting the carrier 18 to move inwardly (as seen in Fig. 2) between the operative surfaces of the two wheels and to present the cylindrical portion 36 of the work 36 to the desired opposed operative portionsjof these two surfaces. The stops 32 and 33, which have been previously adjusted for the particular-diameter of the work as hereinbefore described, limitthis inward movement of the work carrier and hence of the work and insure the presenting of the cylindrical portion of the work to the proper :opposed oplating wheel 11 controls the rotation of the work upon the carrier and at the same time tends to feed the workalong the carrier and in av direction toward the right as seen in Fig. 1. The sleeve 42, however, prevents a giovement or feeding of the work during the ensuing grinding action on the round portion 36 andthus actsto preverit the enlarged portion of the work from engaging with the abrasive ,whees, the sto 38" inn Fig. 1

is shown in full lines this initial osition of the work, and it may be noted t at during.

the rotat ng of the work by the regulating wheel the cylindrical portion 36 of the work 3.6 ispresented to the gfi-inding wheel for a major grinding action t ereon. while the enlarged endportion 36 is effective] held out of engagement with the two whee s.

Thus, after themajor grinding operation as above described has taken place, the operatormoves the operating bar 48 to the left as viewed in Fig. 1, and thus acting throu h the pivoted lever 45 and arm 44 moves t 1e punger 43 (through the sleeve 42) also to the left and into engagement with the righthand end of the work 36 which, as above described, is held against'the' stop sleeve 42 during the above grinding operation. The movement of the plunger rod .43 to the left the left -against; the feeding; action of the:

regulating, wheel I and into. substantially the dotted line-position indicated in Fig. 1, thus passing that part ofthe cylindrical portion 36 of the work .36, heretofore exterior and opt *of range-of the operative, portions of the two wheels, into active operative relation to ..the wheels for grinding action thereon. The

operator thereupon releases the operating nod 48 which, with its punger 43, is returned by the spring 51 tono'rmal. The grin-ding action continues, this time, however, accompanied by a. movement of the work 36 to the right in response to the feedingaction of the regulating wheel 11, until the sleeve 42 halts the movement of the work; This halting, as above described,

.may, if desired, be supplemented by the stop 1 38, which effectively safeguards the enlarged portion 36" of the work. The foregoing successive'manual .(to the left) and automatic (to the'right) movements of the work 36 may be repeated as often as desired until the required amount of finished grinding action is attained.. The operating handle is thereupon moved in clockwise relation to move the carrier upwardly as viewed in Fig. 1, or outwardly between more distant ortions of the approaching operative sur aces of the .two wheels as viewed in Fig. 2, and the work .36 is ready to be dis- 7 charged from the carrier. The work 36 may thereupon be ejected from, the .apparatus by a; continued movement to the left of the plunger 43 after the ejection in any suitable manner. When the operator releases the operating rod 48', a tension spring 51' held at one end by a pin 51 in the bar 18 and connected at the other end to the lever &5 acts to move the ejector rod 43 with its associated operating mechanisms to the right and substantially into the position shown in Fig. 1, whence the apparatus is in readiness to re-. ceive upon the work carrier 18 another article to be operated upon, whence the procedure and operation hereinbefore described are repeated.

It will thus be seen that there has been provided in this invention a practical apparatus in which the several objects hereinbefore set forth, as well as many advantages, are achieved." It will be seen that the apparatus is of rugged and durable construction throughout, thus insuring "dependabe and reliable action and operation thereof and, moreover, that the apparatus is of simple and convenient adjustment throughout. Moreover, certain of the mechanisms above described are readily .detachableand thus inake possible a wide rangeof application oftheapparatus.-'

As many possible; embodiments might be made. of this invention and as many changes might made in the embodiment above s'et 'tion of fbjrt'lhlit is it a .iinaisibtii} as il irate; hereinbefore set forth or shown ,in-the '5 aecompanymg drawings is tobe interpreted as illustrative and not in a limiting sense.

I claim as my invention; I 1. In apparatus of the general nature of that herein described, incombination a grinding wheel rotatable at relatively hlgh speed, a regulating wheel rotatable. atrelatively low speed, a carrier extending-bethe cylindrical portion of a body having an enlarged end portion, said wheels presenting operative surfaces traveling in opposite directions whereby said regulating wheel acts to rotate said body on said carrier during operation thereon by said grinding wheel, and means adapted to engage themlarged end portion of said body to prevent said end portion of said body from entering between the operative surfaces of said wheels, and positioned topermit substantial- 1y complete entry of said cylindrical portion of the body betweenthe operative surfaces of said two wheels. 2. 'In apparatus of the general nature of that herein described, in, combination, a

grinding wheel rotatable at relatively high speed, a regulating wheel rotatable atrelatively low'speed, said wheelsbeing adapted to present operative surfaces traveling in opposite directions, means for holding work of round section between. the operative surfaces-of said two wheels and path of travel for thework with respect to said two wheels, thepath of travel of the operative surface of saidvregulating wheel upon movement to give said work a retrograde, movement. 3. In apparatus of the general nature of that herein described, in combination, a

said worku tween said wheels and adapted to support p,

rovidin a P g grinding wheel rotatable at relatively high speed, a carrier positioned adjacent the operative surface of said wheel and adapted to support the cylindrical portion of a body.

having an enlarged end portion, means for simultaneously rotating saidbody uponsaid carrierand for feeding said bod along. said carrier ,to present the cylindrical portion- .thereof to said grinding wheel, said carrier being provided with a recess, and means mounted in said recess and extending there, from in substantial ali out with one. en

of the face of said-grin ingwheel and form-.

ing a stop withgwhichthe enlarged end 'or-- sa d body may engage as the b0 y is fed along said carrier, thereby to prevent entr of said enlarged end portion into operat1ve relation with said grinding wheel while permitting substantially complete entry of the cylindrical portion of said body into operative relation with said grinding wheel.

4. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present operative surfaces traveling in opposite directions, means for holding work of round section between the operative surfaces of said two wheels and providing a path of travel for the work with respect to said two wheels, the path of travel of the operative surface of said regulating wheel being inclined with respect to the path of travel of the work provided by said workholding means, whereby said regulating wheel may act to feed said body along said holding means, a longitudinally adjustable sleeve positioned in substantial alignment with the work advanced by said regulating wheel along said work-holding means and positioned in the path of travel thereof, and means adapted to pass through said sleeve and movably mounted with respect thereto, said means being adapted upon movement through said sleeve to give the work a retrograde movement.

b'. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a carrier mounted adjacent said wheel and adapted to support the cylindrical portion of a body having an enlarged end portion, said carrier being provided with a wear strip exposed for contact by the cylindrical portion of said body, and means for simultaneously rotating said body on said carrier and feeding said body along said carrier, for action thereon by said grinding wheel, said carrier terminating adjacent the end of the face of said grinding wheel and said wear strip projecting beyond the end of said carrier to form a stop for engagement by said enlarged portion of said body as the latter is fed along said carrier.

6. In apparatus of the general nature of that herein described, in combination, a

grinding wheel rota-table at relatively high speed, a regulating wheel rotatable at relatlvely low speed, said wheels being adapted to present approaching operative surfaces and opposed operative portions of said surfaces to work presented thereto, a work-carrier extending between said wheels and adapted to support Work of round section for action thereon by said wheels, means for moving said work-carrier between said approaching operative surfaces of the two wheels and in a direction to carry the work into or out of operative relation to the opposed operative portions of the said wheels, and means for maintaining the work out of contact with said grinding Wheel durlng movement of said carrier to carry the work into or out of operative relation with the operative portions of said two Wheels.

7. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, a carrier extending between said wheels for supporting a cylindrical body thereon, the path of travel provided by said carrier making an angle with the path of travel ofthe operative surface of said regulating wheel whereby said body is rotated and fed along said carrier, means of said regulating wheel whereby said body is rotated and fed along said carrier, adjustably means adapted to halt the movement of said body along said carrier, and independently acting means for giving said body a reverse movement thereby to discharge said body from said carrier.

9. In apparatus of the general nature of that herein described, in combination, a

grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatlvely low speed, a carrier extending between said wheels for supporting a cylindrical body thereon, the path of travel provided by said carrier making an angle with the path of travel of the operative surface of said regulating wheel whereby said body is rotated and fed along said carrier, manually operative means adapted to engage said body and upon operation to discharge said body from said carrier and out of operative relation with respect to said two wheels, a stop member positioned so as to halt the movement of said body along said carrier and act-ing independently of said last-mentioned means, and spring means for returning said manually operative means to norinal position. l

10. In apparatus of the general nature of that herein described, in combination, a gr nding wheel rotatab e at relatively high speed, a carrier mounted adj acent'said grinding wheel and adapted to support the cylinmassaf carrier thereby to present the cylindrical portion thereof to said grinding wheel for grinding action thereon, means adapted to e enga d by said enlarged end portion of said ody as the'latter is moved along said carrier, and positioned tofhalt the body at such a point that the enlarged portion thereof is prevented from entering into ongagement with said grinding wheel, and means for giving said body a reverse movement to discharge said body from said carrier.

11. In apparatus of the general nature of that herein described, in combination, a

grinding wheel rotatable at relatively high speed, a carrier mounted adjacent said grinding wheel and adapted to support the cylindrical portion of a body having an enlarged end portion, means for simultaneously rotating and feeding said body along said carrier thereby to present the cylindrical portion thereof to said grinding wheel for grinding action thereon, means adapted to' be engaged by] said enlarged end portion of said body as the latter is moved along said carrier, thereby to limit. the extent of movement of said body on said carrier, and manually operative means adapted to be placed in engagement with the other end of said body and to move said body in reverse direction and out of operative relation with respect to said wheel.

12. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a carrier mounted adjacent said grinding wheel and adapted to support the cylindrical portion of a body having an enlarged end portion, means for simultaneously rotating and feeding said body along said carrier thereby to present the cylindrical portion thereof to said grinding wheel for grinding action thereon, means adapted to be engaged by said enlarged end portion of said body as the latter is moved along saidrarrier, thereby to limit the extent of movement of said body on said carrier, manually operative means adapted upon operation to engage the other end of said body and move said body in reverse direction and out of operative relation to said grinding wheel, and spring means for returning said manually operative means to normal.

18. In apparatus of the general nature of vided by said carriermaking an angle with thepath bf travel of the operative surface of' said' regulating 'wheel thereby to feed said bodyjalongjsaid carrier for operation thereon by said grinding wheel, said carrier terminating adjacent one end of the operative surfaces of said wheels whereby said enlarged portion of said body may engage said carrier thereby to halt the movement of said body alongsaid carrier, and manually operative means for moving said body in reverse direction to discharge said body from said carrier and out of operative relation with respect to said wheels.

14. In apparatus ofthe general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a carrier mounted adjacent said grinding wheel and adapted to support the cylindrical portion of a body having an en-' larged end portion, a regulating Wheel adapted to rotate and feed said body along said carrier for grinding gaction thereon by said grinding wheel, an adjustable stop positioned in the path of travel of said en larged end portion and adapted to be engaged thereby to limit the movement of said body along said carrier, and means acting independently of said adjustable stop and manually operative for moving said body in reverse direction to remove said body from operative relation to said two wheels. I 1 v 15. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in opposite directions and to present opposed operative portions of said surlot) face to Work presented thereto, a movable said opposed operative portions, saidcarrier providing a path of travel for said body inclined with respect to the pathof travel of the operative surface of said regulating wheel,- and a stop member positioned in the path oftravel of said enlarged end portion and adapted to be engaged thereby to limit the movement of said body along said carrier. i

16. In apparatus of the general nature of that herein described,,in combination, a

grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at' rela'uu tively low speed, said wheels being adapted H to present approaching"operative surfaces traveling in opposite directions and,to present opposed operative portions of said surfaces to work presented thereto, a movable carrier extending between said wheels for supporting a body having a cylindrical portion and an enlarged end pbrtion ineans for moving said carrier between said approaching operative surfaces and in a direction toward said opposed operative portions thereof with said enlarged end portion of said body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions, said carrier providing a path of travel for said body inclined with respect to the path of travel of the operative surface of said regulating wheel, a stop member positioned in the path of travel of said enlarged end portion and adapted to be engaged therebyto limit the movement of said body along said carrier, and means associated with said carrier and movable therewith for giving said body a reverse movement along said carrier to remove said body from operative relation to said wheels.

17. In apparatus of the general nature of that herein described, in combination, av

grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in opposite directions and to present opposed operative portions of said surface to work presented thereto, a movable carrier extending between said wheels for supporting a body having a cylindrical portion and an enlarged end portion, means for moving said carrier between said approaching operative surfaces and in a direction toward said opposed operative portions thereof with said enlarged end portion of said body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions, said carrier providing a path of travel for said body inclined with respect to the path of travel of the operative surface of said regulating wheel, a stop member mounted at one end of said carrier positioned in the path of travel of said enlarged end portion and adapted to be engaged thereby to limit the movement of said body along said carrier, and means mounted upon the other end of said carrier adapted upon operation to give said body a reverse movement along said carrier to discharge said body therefrom.

18. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in opposite directions and to present opposed operative portions of said surfaces to work presented thereto, a carrier extending between said wheels adapted to support a body having a cylindrical portion and: an enlarged end portion, said carrier providing a path of travel inclined with respect to the path of travel of the operative surface of said regulating wheel, means for moving said carrier between said approaching operative surfaces and in a direction toward said opposed operative portions thereof with said enlarged end portion of said body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions, means associated with said carrier for aligning the cylindrical portion of said body with the operative surface of said grinding wheel, and a stop positioned in the path of travel of said body on said carrier for limiting the movement thereof to prevent said enlarged end portion from being moved into operative relation to said opposed operative portions.

19, In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in opposite directions and to present opposed operative portions of said surfaces to work presented thereto, a carrier extending between said wheels adapted to support a body having a cylindrical portion and an enlarged end portion, said carrier providing a path of travel inclined with respect to the path of travel of the operative surface of said regulating wheel, means for moving said carrier between said approaching operative surfaces and in a direction toward said opposed operative portions thereofwith said enlarged end portion of said body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions, said carrier being provided with an exposed supporting surface inclined toward the operative surface of said regulating wheel thereby to support the cylindrical portion of said body in alignment with the operative surface of said grinding Wheel as said carrier is moved to carry said body toward said opposed operative portions of said two wheels, and means for limiting the movement of said body along said carrier to prevent said enlarged end portion from entering into operative relation to said two wheels.

20. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in oppositedirect-ions and to present opposed operative portions of said surfaces to work presented thereto, a carrier extending between said wheels adapted to support a body having a cylindrical portion and an enlarged end portion, said carrier with said enlarged end portion of said "body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions, means associated with said carrier for maintaining the cylindrical portion of said body out of contact with the operative surface of said grinding wheel when said carrier is positioned between more distant portions of said approaching operative surfaces, means for moving said carrier in reverse direction to remove said body from said opposed operative portions, and means for givmg said body a reverse movement along said carrier to discharge said body therefrom. I p

21. Inapparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces traveling in opposite directions and to present opposed operative portions of said surfaces to work presented thereto, a carrier extending between said Wheels adapted to support a body-having a cylindrical portion and an enlarged end portion, said carrier providing a path of travel inclined with respect to the path of travel of the operative surface of said regulating wheel, means for moving said carrier between said approaching operative surfaces and in a direction toward said opposed operative portions thereof with said enlar ed end portion of said body exterior of sald operative surfaces to present said cylindrical portion to said opposed operative portions, said carrier having a supporting surface inclined with respect to the surface of said regulating wheel thereby to urge said body toward said regulating wheel, means for moving said carriage between said approaching operative surfaces and in a direction toward said opposed operative portions thereof with said enlarged end portion of said body exterior of said operative surfaces to present said cylindrical portion to said opposed operative portions and in a reverse direction to remove said body after grinding action thereon from said opposed operative portions, means for limiting the movement of said body along said carrier when said body is presented to said opposed operative portions to prevent the entry therebetween of said enlarged end portion,

and means adapted to be operated after said carrier is moved in reverse direction to give said body a reverse movement along said carrier to take said body out of operative relation from said wheels.

22. In apparatus of the general nature of that herein described, in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, said wheels being adapted to present approaching operative surfaces and opposed operative portions of said surfaces to work presented thereto, a workcarrier extending between said wheels and adapted to support work of round section for action thereon by said wheels, and means for moving said work-carrier between said approaching operative surfaces of the two wheels and in a direction to operative relation with the operative portions of said two wheels.

23'. In apparatus of the general nature of that herein described, in combination, a

grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, means extending between said wheels and adapted to hold a cylindrical body in operative relation to said two wheels, the path of travel provided by said holding means making an angle with the path of travel of the operative surface of said regulating wheel thereby to feed said body along said holding means, means cs1- tioned in the path of travel of said body for limiting the movement of' said body along said holding means, said limiting means being provided with a substantially centrally positioned opening, a movable plunger adapted to be passed through said opening to move said body along said holding means in reverse direction, a pivotally mounted lever, and connections between said lever and said plunger adapted upon swinging movement of said lever to give said plunger a substantially rectilinear movement. 1

24; In apparatus of the general nature of that herein described, 'in combination, a grinding wheel rotatable at relatively high speed, a regulating wheel rotatable at relatively low speed, a carrier extending between said wheels and adapted to support a said regulating wheel thereby to feed said body along said carrier, a threaded sleeve member positioned in the path of travel of said body relatively fixed means into which said sleeve member is threaded, thereby to permit adjustment of said )sleeve member toward or away from said wheels, and aplunger adapted to pass through said sleeve to move said body in reverse direction along said carrier.

In testimony whereof, I have signed my name to this specification this 28th day of December 1922.

LEWIS R. HEIMO 

